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202.5=18t-0.2^2
We move all terms to the left:
202.5-(18t-0.2^2)=0
We get rid of parentheses
-18t+202.5+0.2^2=0
We add all the numbers together, and all the variables
-18t+202.54=0
We move all terms containing t to the left, all other terms to the right
-18t=-202.54
t=-202.54/-18
t=11+1.7874015748032/7.0866141732284
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